Long-chain poly-arginine functionalized porous Fe3O4 microspheres as   magnetic flocculant for efficient harvesting of oleaginous microalgae

doi:10.1016/j.algal.2017.08.025

CORC > 北京大学 > 工学院

	Long-chain poly-arginine functionalized porous Fe3O4 microspheres as magnetic flocculant for efficient harvesting of oleaginous microalgae
	Liu, Pei-Rui ; Wang, Ting ; Yang, Zi-Yu ; Hong, Yu ; Hou, Yang-Long
刊名	ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
	2017
关键词	Porous Fe3O4 microspheres Long-chain poly-arginine Polymer molecular weight Magnetic harvesting Chlorella sp HQ MAGNETOPHORETIC SEPARATION MARINE MICROALGAE MOLECULAR-WEIGHT PARTICLE-SIZE CHLORELLA SP NANOPARTICLES WATER REMOVAL BIOFUELS RECOVERY
DOI	10.1016/j.algal.2017.08.025
英文摘要	Considering the porous characteristics of magnetic porous Fe3O4 microspheres, this study aims to utilize longchain poly-arginine (PA) to obtain PA-modified porous Fe3O4 microspheres (p-Fe3O4@PA). The microspheres possessed a loose porous structure on the surface, and the average pore size was 224.2 angstrom. The harvesting efficiency for Chlorella sp. HQ improved markedly compared with that of p-Fe3O4 after modification with three PAs with different molecular weights. p-Fe3O4@PA-2 (PA molecular weight: 15,000-70,000) had the best performance with a decreasing dosage from 300 mg L-1 to 10 mg L-1. The results indicated that PA modification at a higher molecular weight could promote microalgae adsorption, whereas PA modification of an excessively high molecular weight (> 70,000) was not conducive to microalgae harvesting. The modification percentage of pFe(3)O(4)@ PA (57.9%) provided abundant adsorption media and active sites for Chlorella sp. HQ adsorption. Bridging flocculation and hydrogen bonding between Chlorella sp. HQ and p-Fe3O4@PA greatly enhanced harvesting efficiency. In addition, the p-Fe3O4@PA could maintain good cycling stability because of the relatively large size of the microspheres.; National Natural Science Foundation [51571034]; Beijing Nova Leading Talents Cultivation Program [Z1511000003150147]; SCI(E); ARTICLE; 99-108; 27
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/484555]
专题	工学院
推荐引用方式 GB/T 7714	Liu, Pei-Rui,Wang, Ting,Yang, Zi-Yu,et al. Long-chain poly-arginine functionalized porous Fe3O4 microspheres as magnetic flocculant for efficient harvesting of oleaginous microalgae[J]. ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS,2017.
APA	Liu, Pei-Rui,Wang, Ting,Yang, Zi-Yu,Hong, Yu,&Hou, Yang-Long.(2017).Long-chain poly-arginine functionalized porous Fe3O4 microspheres as magnetic flocculant for efficient harvesting of oleaginous microalgae.ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS.
MLA	Liu, Pei-Rui,et al."Long-chain poly-arginine functionalized porous Fe3O4 microspheres as magnetic flocculant for efficient harvesting of oleaginous microalgae".ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS (2017).